From: Christoph Hellwig <[email protected]> commit 7370997d48520ad923e8eb4deb59ebf290396202 upstream.
Don't error out if the dasd_biodasdinfo symbol is not available. Cc: [email protected] Fixes: 26d7e28e3820 ("s390/dasd: remove ioctl_by_bdev calls") Reported-by: Christian Borntraeger <[email protected]> Signed-off-by: Christoph Hellwig <[email protected]> Tested-by: Christian Borntraeger <[email protected]> Reviewed-by: Stefan Haberland <[email protected]> Signed-off-by: Jens Axboe <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]> --- block/partitions/ibm.c | 7 +++---- 1 file changed, 3 insertions(+), 4 deletions(-) --- a/block/partitions/ibm.c +++ b/block/partitions/ibm.c @@ -305,8 +305,6 @@ int ibm_partition(struct parsed_partitio if (!disk->fops->getgeo) goto out_exit; fn = symbol_get(dasd_biodasdinfo); - if (!fn) - goto out_exit; blocksize = bdev_logical_block_size(bdev); if (blocksize <= 0) goto out_symbol; @@ -326,7 +324,7 @@ int ibm_partition(struct parsed_partitio geo->start = get_start_sect(bdev); if (disk->fops->getgeo(bdev, geo)) goto out_freeall; - if (fn(disk, info)) { + if (!fn || fn(disk, info)) { kfree(info); info = NULL; } @@ -370,7 +368,8 @@ out_nolab: out_nogeo: kfree(info); out_symbol: - symbol_put(dasd_biodasdinfo); + if (fn) + symbol_put(dasd_biodasdinfo); out_exit: return res; }
